iNWS Alert

IAC001-003-009-013-015-025-027-029-039-047-049-053-073-075-077-
079-083-099-117-121-123-125-127-135-153-157-159-161-169-171-173-
175-181-185-187-180800-
/O.NEW.KDMX.TO.A.0218.260518T0107Z-260518T0800Z/

THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 218 IN
EFFECT UNTIL 3 AM CDT MONDAY FOR THE FOLLOWING AREAS

IN IOWA THIS WATCH INCLUDES 35 COUNTIES

IN CENTRAL IOWA

BOONE DALLAS GRUNDY
HAMILTON HARDIN JASPER
MARSHALL POLK POWESHIEK
STORY TAMA WEBSTER

IN NORTHEAST IOWA

BLACK HAWK

IN SOUTH CENTRAL IOWA

CLARKE DECATUR LUCAS
MADISON MAHASKA MARION
MONROE RINGGOLD UNION
WARREN WAYNE

IN SOUTHWEST IOWA

ADAIR ADAMS CASS
TAYLOR

IN WEST CENTRAL IOWA

AUDUBON CALHOUN CARROLL
CRAWFORD GREENE GUTHRIE
SAC

THIS INCLUDES THE CITIES OF ACKLEY, ADAIR, ADEL, ALBIA, ALLERTON,
AMES, ATLANTIC, AUDUBON, BAYARD, BEDFORD, BOONE, CARLISLE,
CARROLL, CASEY, CEDAR FALLS, CHARITON, CONRAD, CORNING, CORYDON,
CRESTON, DENISON, DES MOINES, DIKE, DYSART, EARLHAM, EARLY,
ELDORA, EXIRA, FONTANELLE, FORT DODGE, GLADBROOK, GREENFIELD,
GRINNELL, GRUNDY CENTER, GUTHRIE CENTER, HUMESTON, INDIANOLA,
IOWA FALLS, JEFFERSON, KNOXVILLE, LAKE CITY, LAKE VIEW, LAMONI,
LENOX, LEON, MANSON, MARSHALLTOWN, MOUNT AYR, NEW MARKET, NEWTON,
NORWALK, ODEBOLT, OSCEOLA, OSKALOOSA, PANORA, PELLA, PERRY,
POMEROY, REINBECK, ROCKWELL CITY, SAC CITY, SCHALLER, SEYMOUR,
STUART, TAMA, TOLEDO, TRAER, WALL LAKE, WATERLOO, WAUKEE,
WEBSTER CITY, WELLSBURG, AND WINTERSET.

* PRIMARY THREATS INCLUDE...

A COUPLE TORNADOES POSSIBLE.
SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 80
MPH LIKELY.
ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE.

PROBABILITY TABLE:
PROB OF 2 OR MORE TORNADOES : 40%
PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES : 20%
PROB OF 10 OR MORE SEVERE WIND EVENTS : 70%
PROB OF 1 OR MORE WIND EVENTS >= 75 MPH : 60%
PROB OF 10 OR MORE SEVERE HAIL EVENTS : 30%
PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 20%
PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 90%
MEAN STORM MOTION /MPH/ : NE 45